Cov xov ntawm lub fastener yog ib qho tseem ceeb hauv lub ntiaj teb ntawm engineering thiab kev tsim kho. Fasteners, xws li screws, bolts, thiab txiv ntseej, vam khom rau lawv cov qauv tsim los tsim kev ruaj ntseg ntawm ntau yam khoom. Cov xov ntawm lub fastener yog hais txog lub helical ridge uas qhwv ib ncig ntawm lub cylindrical lub cev ntawm lub fastener, cia nws mus koom nrog ib tug coj threaded qhov los yog txiv ntseej.
Qhov kev tsim no tsis tsuas yog muab lub zog txhua yam tab sis kuj yooj yim rau kev sib dhos thiab disassembly.
Cov xov tuaj yeem muab faib ua ntau hom raws li lawv qhov profile, suab, thiab txoj kab uas hla. Cov xov ntau tshaj plaws suav nrog Unified National Thread (UN), Metric Thread, thiab Acme Thread. Txhua hom ua haujlwm rau cov ntawv thov tshwj xeeb, nrog rau qhov sib txawv ntawm lawv qhov ntev thiab cov duab kom haum rau cov khoom sib txawv thiab cov kev xav tau thauj khoom.
Xov hom:
Ib tug xov yog ib tug zoo li ib tug uniform helix protruding ntawm ib tug ntoo khaub lig-section ntawm ib tug khoom nto los yog ib tug sab hauv. Raws li nws lub koom haum cov yam ntxwv thiab kev siv yuav muab faib ua peb pawg:
1. Ordinary thread: tus hniav Angle yog daim duab peb sab, siv los txuas lossis zawm qhov chaw. Cov xov zoo tib yam tau muab faib ua cov xov ntxhib thiab cov xov zoo raws li lub suab, thiab kev sib txuas lub zog ntawm cov xov zoo yog siab dua.
2. Kev sib kis xov: hom hniav muaj trapezoid, duab plaub, pom cov duab thiab daim duab peb sab, thiab lwm yam.
3. Sealing xov: siv los kaw kev sib txuas, feem ntau yog cov yeeb nkab xov, taper xov thiab taper yeeb nkab xov.
Fit qib ntawm thread:
Xov haum yog qhov luaj li cas ntawm slack los yog nruj ntawm cov ntsia hlau threads, thiab qib ntawm qhov haum yog cov teev ua ke ntawm deviations thiab tolerances ua nyob rau hauv lub sab hauv thiab sab nraud threads.
Rau cov inch threads, muaj peb qib rau cov xov sab nraud: 1A, 2A, thiab 3A, thiab peb qib rau cov xov sab hauv: 1B, 2B, thiab 3B. Cov qib siab dua, qhov nruj dua qhov haum. Hauv inch threads, qhov sib txawv tsuas yog teev rau chav kawm 1A thiab 2A, qhov sib txawv rau chav kawm 3A yog xoom, thiab qib sib txawv rau chav kawm 1A thiab chav kawm 2A yog sib npaug. Qhov ntau dua cov qhab nia, qhov tsawg dua qhov kam rau ua.
Post lub sij hawm: Nov-21-2024
